#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<unistd.h>

int main(){
  close(0);
  close(1);
  int fd =  open("my_file",O_RDONLY|O_CREAT,0666);

  return 0;
}
